Ounces to Gallons Converter
Convert fluid ounces to gallons and gallons to fluid ounces with precision
Volume Conversion Calculator
Enter the volume in fluid ounces
Enter the volume in gallons
Conversion Results
Enter a value in either fluid ounces or gallons to see the conversion
Common Conversions (US Gallon)
| Fluid Ounces | Gallons | Description |
|---|---|---|
| 8 fl oz | 0.0625 | 1 cup |
| 16 fl oz | 0.125 | 1 pint / 2 cups |
| 32 fl oz | 0.25 | 1 quart / 4 cups |
| 64 fl oz | 0.5 | Half gallon / 2 quarts |
| 128 fl oz | 1 | 1 gallon / 4 quarts |
| 256 fl oz | 2 | 2 gallons |
| 384 fl oz | 3 | 3 gallons |
| 512 fl oz | 4 | 4 gallons |
| 640 fl oz | 5 | 5 gallons |
| 1280 fl oz | 10 | 10 gallons |
Example Calculations
Example 1: Pool Calculation
Question: A pool holds 15,000 gallons. How many fluid ounces is that?
Solution: 15,000 gallons × 128 = 1,920,000 fl oz
Answer: 1,920,000 fluid ounces
Example 2: Beverage Container
Question: How many gallons is a 64 fluid ounce pitcher?
Solution: 64 fl oz ÷ 128 = 0.5 gallons
Answer: 0.5 gallons (half gallon)
Example 3: Daily Water Intake
Question: An adult should drink 1 gallon of water daily. How many 8 oz glasses is that?
Solution: 1 gallon = 128 fl oz ÷ 8 = 16 glasses
Answer: 16 eight-ounce glasses
Quick Reference
1 US Gallon
128 fl oz
3.785 liters
1 UK Gallon
160 fl oz
4.546 liters
1 Gallon Equals
Conversion Formulas
Fluid Ounces to Gallons (US):
gallons = fl oz / 128
Gallons to Fluid Ounces (US):
fl oz = gallons × 128
Understanding Fluid Ounces to Gallons Conversion
What is a Gallon?
A gallon is a unit of volume measurement used primarily for liquids. It's larger than a pint, liter, and fluid ounce, but smaller than a cubic foot. The gallon is commonly used for measuring fuel, milk, water, and other liquids.
US vs UK Gallons
- •US Gallon: 128 fluid ounces or 3.785 liters
- •UK Gallon: 160 fluid ounces or 4.546 liters
- •1 UK gallon = 1.201 US gallons
- •1 US gallon = 0.8317 UK gallons
Gallon Relationships
Understanding how gallons relate to other volume measurements is essential for cooking, brewing, and everyday tasks:
1 Gallon =
- • 4 quarts
- • 8 pints
- • 16 cups
- • 128 fluid ounces
Fun Fact: 1 gallon equals the recommended daily water intake for an average male adult!
Practical Applications
🏊 Swimming Pools
Calculate pool volume and chemical requirements in gallons
🥤 Beverages
Convert drink volumes for parties and events
🍺 Brewing
Measure ingredients and batch sizes accurately